David K. Markley, PH.D.
Clinical Psychologist · Seattle, WA
David K. Markley, PH.D. is a clinical psychologist with a practice address in Seattle, Washington, and NPI 1750452876, issued on Nov 11, 2006. Check the license (Washington PY00002563, as entered in NPPES) with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- David K. Markley
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PY00002563 WA
Self-reported in NPPES; status is on the state search - Practice location
- 509 Olive Way Ste 204, Seattle, WA 98101
- Phone
- (206) 329-5255
- Enumerated
- Nov 11, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (206) 726-1878
- Medicare enrollment
- Enrolled (PECOS I20091002000473); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 509 Olive Way Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Isabella ComphelClinical Social Worker1144714379
- Gabriela D'Jaen, M.D.Psychiatry Physician1245659838
- Vanessa Dzivakwe, PHDPsychologist1013340793
- Brent Hopkins, PH.D.Clinical Psychologist1578171336
- James Lolley, PSYDClinical Psychologist1427474618
- Aaron Parker, PSYDRehabilitation Psychologist1164072260
Verify David K. Markley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PY00002563Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
594 clinical psychologist records list a practice address in Seattle
They are 594 of the 41,956 NPPES records with a practice address in Seattle, and 1,675 clinical psychologist records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 594 in Seattle → All 1,675 in Washington → Every provider in Seattle →
Other clinical psychologist records in Washington
- Amy Aadland, PSY.D.Vancouver, WA1134378227
- Geneva Abiko, PSY.D.Bellevue, WA1891905303
- Michelle Accardi-Ravid, PH.D.Seattle, WA1689094294
- Aimee Acebedo, PH.D.Tacoma, WA1437342912
- Chloe Adams, PHDLakewood, WA1407788789
- Diane Adams, PH.D.Renton, WA1922112937
- Julie Adams, PHDEdmonds, WA1700820644
- Kristopher AdamsVancouver, WA1679197370
- Reginald Adkisson, PHDBremerton, WA1063632834
- Chrystal Agnor, PH.D.Vancouver, WA1215241781
Common questions
What is David K. Markley, PH.D.'s NPI number?
David K. Markley, PH.D.'s National Provider Identifier (NPI) is 1750452876, issued on Nov 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David K. Markley, PH.D. located?
The NPPES record lists a practice address at 509 Olive Way Ste 204, Seattle, WA, 98101. Phone: (206) 329-5255. Providers update this record themselves, so call before visiting.
How can I verify David K. Markley, PH.D.'s license?
NPPES lists Washington license number PY00002563, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.